AD4003

18-Bit, 2 MSPS Precision SAR Differential ADC

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Product Details

The AD4003 is a low noise, low power, high speed, 18-bit, 2 MSPS precision successive approximation register (SAR) analog-to-digital converter (ADC). It incorporates ease of use features that lower the signal chain power, reduce signal chain complexity, and enable higher channel density. The high-Z mode, coupled with a long acquisition phase, eliminates the need for a dedicated high power, high speed ADC driver, thus broadening the range of low power precision amplifiers that can drive this ADC directly, while still achieving optimum performance. The input span compression feature enables the ADC driver amplifier and the ADC to operate off common supply rails without the need for a negative supply while preserving the full ADC code range. The low serial peripheral interface (SPI) clock rate requirement reduces the digital input/output power consumption, broadens processor options, and simplifies the task of sending data across digital isolation.

Operating from a 1.8 V supply, the AD4003 has a ±VREF fully differ-ential input range with VREF ranging from 2.4 V to 5.1 V. The AD4003 consumes only 16 mW at 2 MSPS with a minimum of 75 MHz SCK rate in turbo mode and achieves ±1.0 LSB (±3.8 ppm) INL maximum, guaranteed no missing codes at 18 bits with 100.5 dB typical SNR. The reference voltage is applied externally and can be set independently of the supply voltage.

The SPI-compatible versatile serial interface features seven different modes including the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. The AD4003 is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply.

The AD4003 is available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from −40°C to +125°C. The device is pin compatible with the 16-bit, 2 MSPS AD4000.

Applications

  • Automatic test equipment
  • Machine automation
  • Medical equipment
  • Battery-powered equipment
  • Precision data acquisition systems

Product Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits

(1)

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EVAL-AD40XX-FMCZ

EVAL-AD40XX-FMCZ Circuit Diagram

EVAL-AD40XX-FMCZ Photo

Product Details

The AD4000/AD4001/AD4003 family evaluation board covers the ease of use, 16-/18-bit, precision successive approximation register (SAR) analog-to-digital converters (ADCs). The AD4000/ AD4001/AD4003 are low power, 16-bit/18-bit, precision SAR ADCs that offer very high performance with throughputs up to 2 MSPS. The evaluation board is designed to demonstrate the performance of the AD4000/AD4001/AD4003 family of ADCs and to provide an easy to understand interface for a variety of system applications. A full description of these products is available in their respective data sheets, which must be consulted when using this evaluation board.

The EVAL-AD4000FMZ/EVAL-AD4001FMZ/EVAL- AD4003FMCZ evaluation boards are ideal for use with the Analog Devices, Inc., high speed system demonstration platform (EVAL-SDP-CH1Z). These evaluation boards interface to the SDP-H1 board via a 120-pin connector. SMA connectors, JP2 and JP3, are provided for the low noise analog signal source.


On-board components include a high precision buffered band gap 5.0 V reference (the ADR4550), a reference buffer (the ADA4807-1), a common-mode buffer (the ADA4807-1), a signal conditioning circuit with two op amps (the ADA4807-1), and a power supply to derive the necessary voltage levels to supply all voltage needs.

Software & Systems Requirements

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Tools & Simulations

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IBIS Models

Reference Designs

(1)

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Product Recommendations

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AD4003 Companion Parts

Recommended Driver Amplifiers

Recommended External Voltage References

Recommended Digital Isolators

  • For SPI Interface, low power, high-speed 3/3.5 kVrms isolation , we recommend the ADUM141D or the ADUM141E .

Recommended Low Dropout Regulators and Switchers

Recommended MEMS Accelerometers

  • For low noise, low drift, low power 3-axis accelerometer , we recommend the ADXL354 .

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

AD4003 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Sample & Buy

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.